What to Do When Grapes Suffer Herbicide or Pesticide Damage? Detailed Remedial Methods
During the cultivation of grapes, pesticide damage often occurs due to improper use of chemicals, causing significant losses to grape yield and quality. So what should be done when grapes suffer pesticide damage? How can pesticide damage be prevented? Let's take a look together.
1. Alleviating Pesticide Damage
Pesticide damage in grapes mainly shows on the leaves, and sometimes also occurs on the fruit and tender shoots. The specific symptoms of pesticide damage vary noticeably depending on the variety. After pesticide damage occurs, the first thing to do is to spray the affected plants with clean water as soon as possible, reducing the damage by lowering the chemical concentration. If the pesticide, herbicide, etc. was sprayed on the ground, irrigation should be carried out promptly to wash away the pesticide residues in the soil; in this way, grape pesticide damage can be greatly alleviated. Alternatively, spraying propionyl brassinolide aqueous solution or Haijingling can also alleviate the damage.
2. Rational Use of Chemicals
When using pesticides, choose safe pesticides as much as possible, be sure to prepare the concentration according to the instructions, do not arbitrarily increase the concentration, and avoid using chemicals when the temperature is too high; do not apply chemicals immediately when there is dew or after rain. If it is a wettable powder pesticide, it must be diluted evenly. When using it together with foliar fertilizer, first fully dissolve the foliar fertilizer before adding it to the pesticide solution, and stir it thoroughly before spraying.
3. Strengthening Management
During grape cultivation, management should be strengthened and strong vines should be cultivated to improve the grape's tolerance to chemicals. After the pesticide damage has been alleviated, fertilizer and water should be increased to help the plants recover as quickly as possible. For small areas of pesticide damage, the affected leaves or fruit can be removed to avoid giving pathogens an opportunity. If the pesticide damage covers a large area, pest and disease control measures should also be taken while alleviating the damage. This is because after pesticide damage occurs, the grape plants become weak and have low resistance to diseases; if pests and diseases break out at this time, it can very easily lead to plant death.
The above is an introduction to what to do when grapes suffer pesticide damage. We hope it can help you. To learn more related knowledge, please stay tuned to us.